Yuuto is an ordinary high school boy who, one day, notices a mysterious tarot card by his bed. He shows it to his parents, who give him the good news - as the son of demonking, he is eligible to become the next Demon Lord. As such, Yuuto is soon brought to a demonic academy in order to improve his devilish skills and earn the title of demon lord. And, you know, get a harem along the way.

As a child, Hayato promised to marry his first love, Seraphy. Fifteen years later, he has become one of the world's greatest spies, all while never falling for the temptations of enemy agents. A mission to expose rival operatives turns chaotic when Hayato reunites with Seraphy, and each realizes the other is a spy. Now the pair must live together, torn between love and duty. The question is... who will break first?

This is a story of girls who risk their youth! Reina is a transfer student who came to Tokyo from Hokkaido. Her reason coming to Tokyo is... 「EDM Club」, a club based on DJ activities! But, the EDM Club that Reina dreamt about everyday is somehow not popular in her new school...? In the near-future Tokyo, the girls' DJ battles are about to unfold! A story driven by music, will now begin―

Kakeru Meguri is a second-year student at Minami Myojin Public High School who plays the character named <Hellshaft> in the VRMMORPG <<Exodia Exodus>>. One day a player suddenly appear in front of his eyes, which turn out to be his popular beauty classmate Ririko Asagiri. She believes that if they defeat the demon king they will be able to return to the real world, in fact Kakeru knows that if a player dies in the game, their consciousness will disappear in the real world. To save an important person, Kakeru possesses the most powerful forbidden force, "Awaken Adult Mode". Ecstas Online was discontinued due to the [death of Kakashi Oniyazu on February 2, 2019](https://www.animenewsnetwork.com/news/2019-02-27/though-you-may-burn-to-ash-manga-kakashi-oniyazu-passes-away/.143962).